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Naramar Hardness indentation technique and stress-strain characteristics in compression. Water from to generate carbon dioxide gas reacts with the polyisocyanate component, which acts as a blowing agent.
For wood adhesives in wood composites, the internal bond strength test can be done with a or testing machine to determine the tensile strength.
This is succeeding model of AF Series which had many delivery result to car industries, seat kis, raw materials manufacturers and public enterprises etc. Chiao Fu Enterprise Co. AF Series is Automatic Hardness Tester for flexible urethane foams to be used for cushion materials in such products as car seat, furniture, and bedding, and for other kind of plastic foam.
JIS-S This tester is for evaluating the strength and durability of furniture such as chairs or stools. A finite element approach with simplified room descriptionActa Acustica united with Acustica, , — Flexible polyurethane foam, process for its production, and seat for automobile. Preparation of the polyol mixture, from the viewpoint of not contacted with a foaming agent and a catalyst as much as possible, relative to the polyol component, the catalyst was blended, then blended foam stabilizer, other ingredients such as crosslinking agents, and finally with the foamable component it is preferable to blend a certain blowing agent.
Concrete, Asphalt and Rock. Theoretical modellingJournal of Sound and Vibration,4—5, — Flexible polyurethane foam, process for its production, and seat for automobile using the flexible polyurethane foam. Preparation of the foaming stock solution] A process of preparing the foam stock solution is not particularly limited, preferably, a mixture consisting of the remainder of the components except the polyisocyanate component sometimes referred to as polyol mixture is prepared and then mixed with the polyisocyanate component the method and the like.
By polyol component comprises a polymer polyol, water can be prevented from deterioration of impact resilience and hardness when used as blowing agents. Foaming stock solution is further foam stabilizer, crosslinker, may contain a catalyst or the like. Cell diameter of cell diameter polyurethane foam [mu] m are those reflect the microscope, and the actual measured five times or more, and the mean value was calculated. By using the foam stabilizer, it is easy to control the size of the bubbles of the polyurethane foam cell size.
Sign in to annotate. This is succeeding model of AF Series which had many delivery result to car industries, seat manufacturers, raw materials manufacturers and public enterprises etc. Flexible polyurethane foam, process for its production, and seat for automobile employing it. The demands covering details from user are given always feed-back to development division, and it has been realized high userbility proper to the exclusive machine.
The pressure foot of ball joint type is used to cope with slant of the sample pressing surface. Communication agent may be used as general purpose as for polyurethane foam moldings. It was then removed from the mold, to obtain a polyurethane foam.
Therefore, when water jsi used as a blowing agent, crosslinking reaction occurs preferentially by the cross-linking agent having an ethylene oxide group, compared with the case of using a propylene oxide end crosslinker, urethane bonds are rapidly formed, early urethane it is possible to obtain a bond. Compression Test Jig for Foam Rubber Specimens This model was used to examine the contribution of the pores versus the elastic fibres to wave transmissions from the flooring surface to the slab.
Issue 1 First Online: Resilience polyurethane foam has a weight average molecular weight of the various polyol contained in the polyol component, depending on the length or the like of the molecular chain, for example, it tends to be higher the impact resilience is high molecular weight.
The present invention pertains to a polyurethane foam which is obtained by foaming and molding a foamable raw liquid that comprises a polyol ingredient and a polyisocyanate ingredient.
Foaming stock solution, polyurethane foam according to claim 1 comprising a dimethylpolysiloxane. On the other hand, the vibration-absorbing polyurethane foam is generally due to the breathability of the polyurethane foam. Foam stabilizer, there can be used those commonly used as those for the polyurethane foam moldings, for example, various siloxane — can be used silicone-based foam stabilizer, such as polyether block copolymer.
Specifically, tetramethyl hexamethylene diamine, pentamethyldiethylenetriamine, dimethylcyclohexylamine, bis — dimethylaminoethyl ether, tetramethyl propylene diamine, trimethyl aminoethyl piperazine, tetramethylethylenediamine, dimethylbenzylamine, methylmorpholine, ethylmorpholine, triethylenediamine, amine catalyst and the like diethanolamine, may be mentioned stannous octoate, tin catalysts such as dibutyltin dilaurate.
We can comply with your demand for special sequence with addition and improvement of outer control PC software and program for inside part of tester. Cross-linking agent 1 a crosslinking agent 1 Asahi Glass Co. The details of the components shown in Table 1 are as follows. The curing time is preferably to seconds, more preferably to seconds, preferably to seconds.
EP Kind code of ref document: The curing time was seconds. As the catalyst, there can be used those commonly used in the production of polyurethane foams may be used alone or in combination depending on the application and requirements. Although the content of the catalyst in the foaming stock solution is not particularly limited, the polyol component parts by weight, preferably 0. Most Related.
JIS K 6400
Kakinos Jiw of the measuring requirements and indication of the measuring data are in accordance with International Unit System SI. The present invention pertains to a polyurethane foam which is obtained by foaming and molding a foamable raw liquid that comprises a polyol ingredient and a polyisocyanate ingredient. Further, the polyol component is 4, to 10, weight average molecular weight, weight average molecular weight per functional group is 1, to 4, of jls sometimes referred to as specific polyola polyol component relative to parts by weight containing 65 parts by mass or more. Additive uis be used in amounts normally used. Foam stabilizer, there can be used those commonly used as those for the polyurethane foam moldings, for example, various siloxane — can be used silicone-based foam stabilizer, such as polyether block copolymer. Vibration absorbing performance resonance frequency and the vibration ratio Resonant frequency and the vibration ratio of the polyurethane foam were measured by the method based on JASO B performance test method of a pad material for an automobile seat.
JIS K6400 PDF